FCM

Testing

Push Notification Testing Best Practices: End-to-End Delivery, Silent Push, Background Fetch, and Analytics

Push notification testing goes far beyond unit-testing your send function. This guide covers the full spectrum: verifying end-to-end delivery without a real device, testing silent push and background fetch correctly, asserting deep link behavior when notifications are tapped, validating badge count updates, and building testable notification analytics

Testing

Firebase Cloud Messaging Testing Guide: Unit Tests, Device Token Mocking, and Payload Validation

Firebase Cloud Messaging (FCM) is the backbone of push notifications for Android, iOS, and web apps, but testing it without hitting real devices is a challenge most teams skip. This guide shows how to write reliable unit tests for FCM payloads, multicast sends, and topic subscriptions using unittest.mock in